# Franklin Sensors ProSensor 710 Professional Stud Finder vs Bosch GMS 120 Professional Digital Multi-Scanner: specs and price compared

A sourced, side-by-side comparison of the Franklin Sensors ProSensor 710 Professional Stud Finder (Franklin Sensors) and Bosch GMS 120 Professional Digital Multi-Scanner (Bosch) among stud finders. Franklin Sensors ProSensor 710 Professional Stud Finder is the cheaper of the two at $52.95.

## Side by side

| Spec | Franklin Sensors ProSensor 710 Professional Stud Finder | Bosch GMS 120 Professional Digital Multi-Scanner |
| --- | --- | --- |
| US price | $52.95 | $109.48 |
| Brand | Franklin Sensors | Bosch |
| Max scan depth (in) | 1.6 | 4.75 |
| Sensing technology | 13 independent capacitance sensors, simultaneous multi-sensor readout | capacitive/inductive multi-mode with automatic calibration; illuminated status ring (green/orange/red) |
| Detects wood metal live wire | wood, metal (no dedicated live-wire mode) | wood studs, ferrous metal to 4.75 in., non-ferrous metal to 3.125 in., live AC wiring to 2 in. |
| Sensor array width (in) | 7.25 | — |
| Center vs edge find | shows full stud width instantly across 13 LEDs (center and both edges simultaneously) | automatic center finder for detected objects |
| Display type | 13-LED array (no LCD) | illuminated graphical display |
| Calibration method | none required; press and hold to scan | automatic calibration in each of 3 modes (wood/metal/AC) |
| Power source | AA batteries (not included) | 9V battery (included) |

## Key differences

- Max scan depth (in): Franklin Sensors ProSensor 710 Professional Stud Finder 1.6 vs Bosch GMS 120 Professional Digital Multi-Scanner 4.75
- Sensing technology: Franklin Sensors ProSensor 710 Professional Stud Finder 13 independent capacitance sensors, simultaneous multi-sensor readout vs Bosch GMS 120 Professional Digital Multi-Scanner capacitive/inductive multi-mode with automatic calibration; illuminated status ring (green/orange/red)
- Detects wood metal live wire: Franklin Sensors ProSensor 710 Professional Stud Finder wood, metal (no dedicated live-wire mode) vs Bosch GMS 120 Professional Digital Multi-Scanner wood studs, ferrous metal to 4.75 in., non-ferrous metal to 3.125 in., live AC wiring to 2 in.
- Center vs edge find: Franklin Sensors ProSensor 710 Professional Stud Finder shows full stud width instantly across 13 LEDs (center and both edges simultaneously) vs Bosch GMS 120 Professional Digital Multi-Scanner automatic center finder for detected objects
- Display type: Franklin Sensors ProSensor 710 Professional Stud Finder 13-LED array (no LCD) vs Bosch GMS 120 Professional Digital Multi-Scanner illuminated graphical display
- Calibration method: Franklin Sensors ProSensor 710 Professional Stud Finder none required; press and hold to scan vs Bosch GMS 120 Professional Digital Multi-Scanner automatic calibration in each of 3 modes (wood/metal/AC)
- Power source: Franklin Sensors ProSensor 710 Professional Stud Finder AA batteries (not included) vs Bosch GMS 120 Professional Digital Multi-Scanner 9V battery (included)

## Sources

- Franklin Sensors ProSensor 710 Professional Stud Finder: https://franklinsensors.com/prosensor-710/ (franklinsensors.com, verified 2026-08-05)
- Bosch GMS 120 Professional Digital Multi-Scanner: https://www.boschtools.com/us/en/products/gms-120-0601081010 (boschtools.com, verified 2026-08-05)

Canonical: https://frontdeskreview.com/gear/stud-finders/franklin-sensors-prosensor-710-vs-bosch-gms-120/
Cite: Per The Front Desk Review, Franklin Sensors ProSensor 710 Professional Stud Finder ($52.95) vs Bosch GMS 120 Professional Digital Multi-Scanner ($109.48) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/stud-finders/franklin-sensors-prosensor-710-vs-bosch-gms-120/
License: CC BY 4.0.